Charles j



(Nd Model.) V

O. J. SCHILLER.

LOGOMOTIVE BRAKE. No. 283,028. Patented Aug. 14, 1883.

FIG?

WITN Essts l UNITED STATES'P TENT OFFICE.

CHARLES J. SCHILLER, OF ST. LoUIs, MIssoUEI, ssrcnon TO THE AMERICAN IBRAKE COMPANY, OF SAME PLAcE.

LOCOMOTI VE-BRAKEL' SPECIFICATION formingpart of Letters Fatent No.283,028, dated August 14, 1883.

I Application filed May 10,1883. (No model.)

To aZZ whom it may concern.-

in Locomotive-Brakes; and I hereby declare the following to be a full,clear, and exact description of the same, reference being had to theaccompanying drawings, wherein- Figure 1 is a side elevation of alocomotive having applied thereto a brake mechanism embodying myinvention Fig. 2 is a side elevation of the devices, one of thebrake-shoes having been removed.

Like letters refer to like parts wherever they occur.

.My invention relates especially to that class of brake mechanism usedonlocomotives, and has for its obj ectto simplify the construction,reduce the number of parts, and socombine the same that the maximumpower shall be obtained and the minimum of space occupied, which is agreat desideratum on closely-connected or close-coupled locomotives.

To this end it consists, mainly, in operating the brake-heads by twoindependent pivoted and sliding wedge-faced blocks located between thedriving-wheels and acting upon the opposite brake-heads; secondly, inloosely pivoting the blocks to and operating the same clirectly from thepiston or like rod, whereby the shoes are permitted to adjust themselvesto the periphery of the wheel with a yielding and evenly-applied force;and, finally, in details of construction, which will hereinafter morefully appear.

I will now proceed to describe my invention more specifically, so thatothers skilled in the art to which it appertains may apply the same.

In the drawings, A indicates the boiler, 13 the cab, O the frame, and Dthe drive-wheels, of a locomotive. Secured to the frame A, at a pointopposite the space between the drive wheels D, is a bracket, 0, for theattachment of the brake mechanism.

E indicates the cylinder, by which means I prefer to apply the power,and this cylinder has a si1pply-pipe, 6, leading from a thrce-way cock,F, arranged within reach of the engi' neer, and there is also aneXhaust-pipe, f, which may lead froin'tlie three-way cock F to theashbox or other suitable place. In order to attach this cylinder, which'is arranged vertically in the space between the wheels D, to thebracket 0, I prefer to cast thereon aflange, 2, and then the bolts whichsecure the cylinder to bracket 0 may pass through flangee and bracket 0into the frame 0, as shown in Fig. 2. The piston of cylinder E may beactuated by steam, (in which caseconnection'is Go made with the boiler,)by compressed air, (which latter will necessitate the use of a mainreservoir for compressed air,) or by any other suitable means.

G indicates the piston-rod, which passes through a stuffing box orgland, g, and extends downtoapointbetweenthebrake-heads,where it isprovided with'a loosely-pivoted crosspiece or cross-head, g, forcarrying the wedgefaced sliding pressure blocks which actuate 7c thebrake-heads. On the piston-rod G is a loose collar or ring, H, providedwith a setscrew, by which it can be secured when ad justed to anydesired point on the piston-rod, and said rod passes through aguide'-bracket, 7 5 I, bolted or otherwise secured to the bracket 0 v ata point just above the brake-shoes. The point at which the ring H is setdetermines the distance of the downward movement of rod G, as when thering comes in contact with So bracket I the downward movement of rod Gis arrested, and as rod G carries the sliding blocks which apply thebrake-heads, the drop of such blocks will determine the distance thebrakes can swing back from the wheels when 85 the power is withdrawn.BracketIalso keeps the shoes and blocks from swinging out from thewheels.

K indicates the wedge-faced sliding pressureblocks, which are looselysecured to the arms 0 of cross-piece g, (which makes the wholearrangement flexible, and allows the same to adjust itself in relationto the brake-shoes and the unevenness of the track.) Each of thesesliding. blocks has at its upper end a projec- 5 tion or nose-piece, 7a,which bears against the brake-heads between the jaws or flanges, and

an inclined face, which moves over a roller with lateral flanges or jawsm, between which it can drop no farther. s

scribed, will operate as follows: Power being applied to the lift-rod G,preferably by admitting steam or air to the under side of the piston ofcylinder E, the rod,in its upward movement,- will carry with it theblocks K, which will slide upon the rear surface of the brakehead,gradually forcing them apart and against the peripheries of the wheelsD. The nose piece or projection 70 will support and force outward theupperpart of the brake-head L, while the inclined face kwill perform thesame function for the lower part of the brake-head, and as theconnection between the sliding blocks K and the cross-piece g aresufficiently loose to permit the block to rock somewhat, the brakeshoewill be at liberty toadjust itself to the periphery of the wheel, andthe power will be applied uniformly over the whole of the brakehead.When the power is withdrawn from rod G, it will sink or drop until thering H comes in contact with the bracket I, when As the blocks K alsodescend with rod G,to which they are attached, the brake-heads L will,by their own weight, swing toward each other and away from the wheelsuntil arrested by striking against the the blocks K.

The great advantages of my invention are, the simplicity and compactnessof the devices and the ability of applying the brakes to any locomotive,no matter how closely the drivers may beset.

Having thus described the nature and advantages of my invention, what Iclaim, and desireoto secure by Letters Patent, is-- 1. In a locomotiveor like brake, the combination, with two swinging or pivoted brakeheads,of two loosely-pivoted wedge-faced sliding pressure blocks arrangedbetween the brake-heads, and a rod for actuating the sliding blocks,substantially as and for the purposes specified.

2. In a locomotive or like brake, the combination of two swinging orpivoted brakeheads, each provided with an anti-friction roller, twoloosely-pivoted wedge-faced sliding pressure-blocks arranged between thebrakeheads, and a rod for actuating. the sliding blocks, substantiallyas and for the purposes specified. r

3. The combination, with two pivoted or swinging brake-heads, of tworocking, sliding, wedgefaced blocks arranged between the brake-heads,and a rod for actuating the sliding blocks, and to which said blocks areloosely connected, substantially as and for the pur poses specified.

arranged between the brake-heads, a rod for actuating the slidingblocks, a rod-guide, and a ring adjustable on the rod, substantially asand for thepurposes specified. V

In testimony whereof I aflix my signature, in presence of two witnesses,this 3d day of May, 1883.

CHARLES JOHN scHILLER.

Witnesses:

E. B. LEIGH, S. W. MOMUNN.

